Advertising accessory



FIG. 1 is a top front perspective view of an advertising accessory showing the claimed design in an environment in which it may be used;

FIG. 2 is a top front perspective view of the advertising accessory;

FIG. 3 is a top rear perspective view thereof;

FIG. 4 is a bottom rear perspective view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a right side view thereof;

FIG. 9 is a top view thereof; and,

FIG. 10 is a bottom view thereof.

The dashed broken lines in the figures show portions of the advertising accessory and environment that form no part of the claimed design. 

CLAIM The ornamental design for an advertising accessory, as shown and described. 